Activin type IB receptor signaling in prostate cancer cells promotes lymph node metastasis in a xenograft model

Masatoshi Nomura, Kimitaka Tanaka, Lixiang Wang, Yutaka Goto, Chizu Mukasa, Kenji Ashida, Ryoichi Takayanagi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Activin, a member of the transforming growth factor-β family, has been known to be a growth and differentiating factor. Despite its pluripotent effects, the roles of activin signaling in prostate cancer pathogenesis are still unclear. In this study, we established several cell lines that express a constitutive active form of activin type IB receptor (ActRIBCA) in human prostate cancer cells, ALVA41 (ALVA-ActRIBCA). There was no apparent change in the proliferation of ALVA-ActRIBCA cells in vitro; however, their migratory ability was significantly enhanced. In a xenograft model, histological analysis revealed that the expression of Snail, a cell-adhesion-suppressing transcription factor, was dramatically increased in ALVA-ActRIBCA tumors, indicating epithelial mesenchymal transition (EMT). Finally, mice bearing ALVA-ActRIBCA cells developed multiple lymph node metastases. In this study, we demonstrated that ActRIBCA signaling can promote cell migration in prostate cancer cells via a network of signaling molecules that work together to trigger the process of EMT, and thereby aid in the aggressiveness and progression of prostate cancers.

Original languageEnglish
Pages (from-to)340-346
Number of pages7
JournalBiochemical and Biophysical Research Communications
Volume430
Issue number1
DOIs
Publication statusPublished - Jan 4 2013

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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